reviews: Bought this quad rail to mount pop-up iron sights to my shotgun. Because of the high telescoping stuck added to my shotgun the usual rut & bead sight were not able to be used. The stock adaptor came with an accessory rail but I needed something to mount the front sight and this quad rail with the one raised rail worked great. Also allowed me to mount a light to the side of the barrel and 2 more rails able to be used in the future.
Only drawback was the long shipping time from China.
I recommend this product to anyone looking for a well built quad rail for a really reasonable price, will deal with T-mart in the future